Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.programming > #900

Re: parallel programming

Show all headers | View raw

On Sat, 1 Oct 2011 20:27:12 +0200, "Dmitry A. Kazakov"
<mailbox@dmitry-kazakov.de> wrote:

>On Sat, 01 Oct 2011 16:12:55 GMT, Richard Harter wrote:
[snip]

>> Okay.  It's not clear to me that that "sharing" is a useful way to
>> think of connectivity but you can look at it that way.  In flow based
>> programming connectivity ordinarily 1-to-1 and almost never n-to-1.  I
>> hope you will forgive me, but I'm skeptical about actors being n-to-1.
>> The term, actors, refers to a number of different related approaches.
>
>Purely mathematically, if you have only 1-to-1, the resulting graph would
>be a chain of nodes. I doubt it capable to do anything useful.
>
>You can send messages to an actor from any other actor. That is n-to-1.

I am skeptical about this being a requirement in any actors based
implementation.  It certainly isn't in flow based programming.

>Also I think it is vital to this framework, that an actor does not know who
>was the sender. 1-to-1 would mean that it knows.

This doesn't follow; one can know that one is getting a message from a
singular source without knowing what the source is.

>
>Another issue is reuse. If actors as software components are subject to
>reuse, then n-to-1 is a requirement.  Components that cannot be reused have
>little or no value.

Another non sequitur.

>
>P.S. I am not going to advocate the actor model here. It is too powerful to
>be safe or efficient.

It occurs to me that there is a major misunderstanding.  Almost none
of what I was writing about was an "actors" implementation.
Originally I made it quite clear that there were two distinct related
paradigms, flow based and actors based, and that I was talking about
flow based.  I have mentioned this regularly; you seem not to have
noticed.

 

Back to comp.programming | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

parallel programming vincent_belliard <vincent@famillebelliard.fr> - 2011-09-22 11:30 -0700
  Re: parallel programming "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-09-23 16:56 +0200
    Re: parallel programming cri@tiac.net (Richard Harter) - 2011-09-27 02:03 +0000
      Re: parallel programming "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-09-27 10:48 +0200
        Re: parallel programming vincent_belliard <vincent@famillebelliard.fr> - 2011-09-27 02:40 -0700
        Re: parallel programming cri@tiac.net (Richard Harter) - 2011-09-28 17:09 +0000
          Re: parallel programming "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-09-28 20:31 +0200
            Re: parallel programming cri@tiac.net (Richard Harter) - 2011-09-29 09:13 +0000
              Re: parallel programming "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-09-29 14:46 +0200
                Re: parallel programming vincent_belliard <vincent@famillebelliard.fr> - 2011-09-29 10:19 -0700
                Re: parallel programming "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-09-30 10:33 +0200
                Re: parallel programming cri@tiac.net (Richard Harter) - 2011-10-01 16:12 +0000
                Re: parallel programming "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-10-01 20:27 +0200
                Re: parallel programming cri@tiac.net (Richard Harter) - 2011-10-02 19:29 +0000
                Re: parallel programming "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-10-03 09:13 +0200
                Re: parallel programming cri@tiac.net (Richard Harter) - 2011-10-03 05:49 +0000
  Re: parallel programming Rui Maciel <rui.maciel@gmail.com> - 2011-09-29 12:03 +0100
    Re: parallel programming vincent_belliard <vincent@famillebelliard.fr> - 2011-09-29 10:28 -0700
      Re: parallel programming Rui Maciel <rui.maciel@gmail.com> - 2011-09-29 23:09 +0100

csiph-web